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Explain Phenylephine and Methoxamine in amyl nitrite ?
They have opposing effects to amyl nitrite as they increase the systemic BP. phenylephine due to its shorter duration of action is preferred. Both cause reflex bradycardia and reduced contractility and cardiac output. Both are given intravenously, with elevation of BP lasting for 3-5 minutes with methoxamine. These agents should not be used in patients with systemic hypertension or those in CHF.
Poisoning: Poisoning is a common medical emergency in childhood. In children under 5 years of age essentially all poisoning are accidental. Nearly 75 per cent of all poi
Metalimnion - Summer Stratification This zone lies below the epilimnion and above the hypolimnion and thus forms the intermediate layer which is non-circulating. The metalimni
Define Proteins in the immune system? Proteins such as γ-globulin serve to protect the body against foreign cells. The immunoglobulin produced by lymphocytes is the large polyp
State about Heller's Nitric Acid Test Take 1 ml concentrated (fuming) nitric acid in a test tube and add 2 ml of urine by means of a pipette by the side of the test tube and la
Q. Define Accuracy of Stress Echocardiography? The accuracy of stress echo tests for the detection of coronary artery disease is expressed as the sensitivity and specificity of
Enzyme Activity Enzymes are biomolecules which catalyze (i.e. increase the rates of) chemical reactions. Almost all enzymes are proteins. In enzymatic reactions, the molecules
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Explain about the Glycemic Index (GI)? In the previous sections, we have studied that some carbohydrates are rapidly digested and absorbed, some are digested slowly while some
Vein Grafts : At the end of ten years only 50 per cent of saphenous vein grafts are paten1 and 50 per cent of the rest may have significant atherosclerotic changes. In a
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